H12-811_V1.0 Exam Dumps - Huawei HCIA-Datacom Questions and Answers

Comprehensive Explanation: When a switch port receives an untagged frame, the port adds the default VLAN ID, known as the PVID (Port VLAN ID), to the frame. This ensures that the frame is associated with a specific VLAN before it is forwarded. The PVID represents the VLAN to which the port belongs and is used when the port receives untagged traffic. This behavior is typical for access and hybrid ports in a VLAN-enabled switch configuration.

The command lease day 0 hour 10 sets the lease time for DHCP-assigned IP addresses to 10 hours. This setting provides a short, specific lease duration for dynamically assigned IP addresses, which can be useful in networks where devices frequently join and leave, minimizing IP address retention time​.

DHCP (Dynamic Host Configuration Protocol) can allocate various network parameters, including:

IP address: Assigns a unique IP to each client.

Gateway address: Provides the default gateway for routing traffic.

DNS server address: Allows domain name resolution. The DHCP server does not assign an operating system, as this is outside its scope​.

An Ethernet II frame has a standard length range of 64 to 1518 bytes, including the Ethernet header. This range accounts for both the minimum frame size (to prevent collisions) and the maximum frame size (to avoid excessive delay). This specification is in line with IEEE 802.3 standards for Ethernet frames​.

Comprehensive and Detailed Explanation:

Huawei ' s Versatile Routing Platform (VRP) supports various shortcut keys for efficient command-line navigation:

CTRL+Z → Moves the user back to User View from any configuration mode. ✅

Left Cursor Key (←) → Moves the cursor one character left. ✅

CTRL+C → Stops the execution of a command. ✅

Incorrect Option:

TAB → Does not display the latest command; instead, it auto-completes commands. ❌

✅ Reference: HCIA-Datacom Command Line Guide – CLI Keyboard Shortcuts

An access port is a switch port assigned to a single VLAN and used to connect end devices (such as PCs or printers).

Access ports do not send VLAN tags. They remove the VLAN tag before forwarding frames to the connected device because most end devices do not support VLAN tagging.

Option A (Incorrect): Tagged frames are sent only by trunk ports, not access ports.

Option B (Correct): The access port strips the VLAN tag before forwarding the frame to ensure compatibility with non-VLAN-aware devices.

Option C (Incorrect): VLAN tags are not exchanged between inbound and outbound ports.

Option D (Incorrect): The access port does not attach PVID information to the frame when sending it out.

Thus, the correct answer is B.